I will never put my name on a product that does not have in it the best that is in me.

A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.

El arte de escribir consiste en encontrar la belleza en lo ordinario.

真理是时间的孩子，而不是权威的孩子。

水的源头如果浑浊，那么水流就不可能清澈；言行不讲信用的，名声必然受到损害。

历史会记住为自由而战的人。